Under the Köppen Climate Classification climate classification, "dry-summer subtropical" climates are often referred to as "Mediterranean". This climate zone has an an average temperature above 10°C (50°F) in their warmest months, and an average in the coldest between 18 to -3°C (64 to 27°F). Summers tend to be dry with less than one-third that of the wettest winter month, and with less than 30mm (1.18 in) of precipitation in a summer month. Many of the regions with Mediterranean climates have relatively mild winters and very warm summers.

The Köppen Climate Classification subtype for this climate is "Csa". (Mediterran Climate).

The average temperature for the year in Beni-Mellal is 66.0°F (18.9°C). The warmest month, on average, is July with an average temperature of 83.0°F (28.3°C). The coolest month on average is January, with an average temperature of 51.0°F (10.6°C).

The highest recorded temperature in Beni-Mellal is 112.0°F (44.4°C), which was recorded in July. The lowest recorded temperature in Beni-Mellal is 25.0°F (-3.9°C), which was recorded in January.

There are an average of 63.0 days of precipitation, with the most precipitation occurring in March with 9.0 days and the least precipitation occurring in July with 1.0 days.

In terms of liquid precipitation, there are an average of 63.0 days of rain, with the most rain occurring in March with 9.0 days of rain, and the least rain occurring in July with 1.0 days of rain.